[U-Boot] [PATCH] mtd: sf_probe: add jedec,spi-nor compatible

Jagan Teki jagan at amarulasolutions.com
Wed Nov 14 08:58:56 UTC 2018


On Sat, Nov 10, 2018 at 1:14 AM Simon Goldschmidt
<simon.k.r.goldschmidt at gmail.com> wrote:
>
> On 06.11.2018 10:24, Neil Armstrong wrote:
> > There is no reason not to use the Linux "jedec,spi-nor" binding in u-boot.
> > This patch adds this compatible into sf_probe and will avoid changing the
> > device tree files to add a u-boot specific compatible to probe a spi flash.
> >
> > This change is needed to enable SPI NOR Flash support using the non-modified
> > device tree file for Amlogic Meson GX SoC based boards.
> >
> > Signed-off-by: Neil Armstrong <narmstrong at baylibre.com>
>
> This is definitively a move in the right direction! I was only days away
> from sending this myself ;-)
>
> Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt at gmail.com>
>
> I would still need more changes to U-Boot to boot the Linux socfpga
> devicetrees without patches (they have compatible = "n25q256a" etc.),
> but then again, maybe it's easier to change the Linux ones to include
> "jedec,spi-nor" than trying the effort of changing U-Boot here...

It's better to revert/remove "spi-flash" from Linux sync dts(s) files
along with this compatible change, u-boot specific stuff like sandbox
still use the legacy.


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